Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1989-02-27
1990-01-16
Sever, Frank
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210723, 210737, B01D 1700, B01D 2100
Patent
active
048941700
ABSTRACT:
A liquid recovery system and method for precipitating dissolved solid material out of a spent liquid, and for thereafter separating the precipitated solid material from the liquid to provide a recovered liquid. The system includes a first tank for receiving spent liquid in a substantially continuous manner, a second tank for receiving a quantity of spent liquid from the first tank, a separator for separating solid material from the spent liquid in the second tank to provide a recovered liquid in the second tank, a third tank for receiving a quantity of recovered liquid from the second tank, and output means for delivering recovered liquid from the third tank in a continuous manner. The separator includes a separator tank through which spent liquid in the second tank is circulated during a circulation period to separate precipitated solid material from the spent liquid. The separator includes means for cleaning and drying separated solid material accumulated therein to permit the accumulated solid material to be dispensed therefrom by gravity into a storage container or the like. The system and method provides advantages of both continuous-type and batch-type liquid recovery systems and methods without their inherent disadvantages.
REFERENCES:
patent: 3936316 (1976-02-01), Gulla
patent: 4200612 (1980-04-01), Lamaze
patent: 4222997 (1980-09-01), Beecher
patent: 4255407 (1981-03-01), Puurunen
patent: 4565675 (1986-01-01), Uchino et al.
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